No matter how you slice the cake, if you ask how to do something that can cause chaos or harm, there will be objections.It has to do with we are accountable for what we tell you. If we could tell you how to build weapons tech we wouldn't because then when we read about it in the news (assuming we are not actual victems) then we would feel responsible for helping someone commit the act. I have explained this to you repeatedly in the simplest of terms. If you ask how to build pyrotechnics the answer is the same. Get a pyro-technics license (with the background check) and then you can do whatever you want.